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P. FRITZ. BURNER FOR INGANDESGENT LIGHTS.

PatntedApr. 6,-1897.

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(No Model.) 2 Sheets-Sheet 2.

F.FRITZ.'

BURNER FOR INCANDBSGENT LIGHTS.

No. 580,183. Patented Apr. 6, 1897.

IN YEA/TOR UNITED STATES PATENT OFFICE.

FERDTNAND FRITZ, OF FRIEDEN AU, GERMANY, ASSIGN OR TO GESELLSOHAFT FUR STATTFFSTE GLUCKLICHTBRENNER PATENT FRITZ GESELLSCHAFT MIT BESCHRANKTER HAFTUNG, OF BERLIN, GERMANY.

BURNER FOR IN CANDESCENT LIGHTS.

SPECIFICATION forming part of Letters Patent No. 580,183, dated April 6,1897.

Application filed January 26, 1897. Serial No. 620,726. (No model.) Patented in Germany October 4, 1895, No. 87,980 in Trance Jl11184; 1896, No. 256,948; in Belgium June 4,1896, 110,121,723,- in Norway .Tnne l,1896,llo. 5,129; in England June 8, 1896, No. 12,542, and in Hungary July 29, 1896,1T0. 6,668.

To all whom it mayconcern: have the desired elasticity and sensibility to Be it known that I, FERDINAND FRITZ,asubmake the mantle proof against the destrucject of the King of Prussia, Emperor of Gertive influence of shocks and concussions. many, residing at Friedenau, near Berlin, in My invention further relates to certain imthe Kingdom of Prussia,German Empire,have provements hereinafter described and finally 5 invented certain new and useful Improveset forth in the claims. ments in Burners for Incandescent Lights, The spring or springs which I employ for (for which Letters Patent were granted to me the purpose of intercepting the shocks and in Germany, No. 87,980, dated Octobera, 1895; concussions to which the lamp may be subin England, No. 12,542, dated June 8, 1896; jected are preferably made of nickel or pak- 60 in France, No. 256,948, dated June 4, 1896; tong orasuitable alloy of metalswhich, being in Belgium, N 0. 121,723, dated June 4, 1896; subjected to moderate degrees of heat, does in Norway, No. 5,129, dated June 4:, 1896, not lose its resiliency. and in Hungary, 1 0. 6,668, dated'July 29, According to my invention the spring or r 5 1896,) of which the following is a specificasprings applied to support the incandescent 65 tion. mantle are arranged Within the burner-tube Myjnvention relates to improvements in of a Bunsen burner, and the pin destined to burners for incandescentlight, especially gascarry the said mantle is supported by or suslight, the gas being supplied by gas-pipes or pended to the said spring or springs.

generated from liquid fuel by the lampsown In the accompanying drawings a variety of 70 heat. modifications serve to illustrate myinvention.

The object of my invention is .to provide Figures 1 and 7 are central vertical sections suitable means for protecting the incandesthrough a complete burner embodying my cent body or mantle against any concussions invention. Fig. 2 is an outside view of the and shocks to which the lamp or lantern may central pin and mantle-guide carried by the 75 be subjected. same. Figs. 3, 4., 5, and 6 are central verti- I am aware that devices are known and cal sections through the burner-tube and have been used before which tend to serve spring-supports, and Fig. 8 indicates several the same purpose, the said devices consisting forms of springs which may be employed for in the application of a spring or springs supsupporting the mantle-carrier. Fig. 9 repre- 8o porting the lamp-burner as a whole or other sents a central vertical section through the parts of the lamp in some or other connection burner-tube and spring-supports, showing the with the mantle, but apparatus of such kind ring secured to the sieve-cap. has hitherto not proved very successful be- Similar letters of reference indicate the cause the weight to be supported by the spring same parts. 85 or springs was comparatively considerable Referring to Fig. 1, A is an elastic support and required a spring or springs of adequate for the central pin B, from which the incanstrength. Such springs, however, are objecdescent mantle Eis suspended. The said suptionable for the reason of notbeingsufficiently port A preferably consists of a spiral spring elastic and sensible for abating the shocks tapering toward the upper end. The pin B 0 and concussions which might destroy the inis carried by the said spring or body A by candescent mantle. means of a disk or plate b or cross-pin se- The device of my invention is equally based cured or formed at or near to the lower end on the application of a spring or springs to of said pin B, and the said disk or plate I) 5 support the incandescent mantle; but it conmay preferably consist of asbestos or other 5 sists in a novel combination and arrangement non-conducting material to prevent the heat of parts so calculated to support but a very of the pin B from being conducted to the light weight, and accordingly the spring or metal of the body A. A cap F, of asbestos. springs may be made of comparatively thin or other suitable material, may cover the top wire, and owing to this circumstance they of the spring or body A to protect the same Lil against the heat of the flame and metal cap of the burner extending down by radiation.

In the modification illustrated by Fig. 1 the mantle-carrier B extends through the sievecap G of the burner, having sufficient play within said cap to vibrate in the vertical direction if shocks and concussions come to shake the burner. The sieve-cap G in this case may be rigidly secured within or to the burner-tube D, but the said sieve-cap G might as well be fixed to the pin B, as illustrated by Fig. 7, and loosely fit over the burner-tube D to follow the vertical vibrations of the said pin B, or said cap may be fixed to the pin B and fit loosely in the burner-tube, as shown in Figs. 3, 4, 5, and 6. To protect the lower edge of the fragile incandescent mantle E against making contact with the metal of the burner-tube, I prefer to attach to the pin 13 a ring II, preferably of lardite or other material resisting to heat and non metallic. The said ring I-I may be suspended by a wire h or wire cross, and to the lower edge of said ring a skeleton cylinder II, of wire, or a short piece of metal tube, may be secured to better guide the ring H on the tube D during the vertical vibrations. The said ring H may also be secured to the sieve-cap G if the latter is fixed to the pin B and loose upon the burner-tube D, as in Fig. 9. In this case the suspending wire or wires h may be omitted.

In Fig. 2 the ring II and skeleton cylinder II, suspended from the pin B, are shown separately.

The spiral spring A or elastic support, ac cording to the modification illustrated by Fig. 1, is resting on the sieve-plate 0 within the burner-tube D; but any other mode of securing the resilient body A will do.

The modification illustrated by Fig. 3 consists in combining the supporting-spring A with a second spring A, riveted or secured to the sieve O, and by this additional spring A an increased sensibility for intercepting and abating the shocks and concussions is obtained. The same effect will be obtained by employing a single spring forming a double cone, as indicated by Fig. 8, or the second auxiliary spring A may be replaced by a number of spiral springs A supporting the main spring A, as shown in Fig. 4:, or the main spring A may be suspended by two or more spiral springs A as shown in Fig. 7.

In the two modifications illustrated by Figs. 5 and 6 the central pin 13 rests within a rigid foot or support B, which may be formed into one piece with the said pin B. The cross pin or pins of said foot B is suspended to elastic springs A as shown in Fig. 5, or supported by such springs A as illustrated by Fig. 6.

In all these modifications the weight supported by the spring or springs consists only of the pin 13, guide-ring H or sieve-cap G, and incandescent body E. To support such parts, springs of thin wire and great elasticity may be employed, and a great sensibility of the system is obtained. In the combination described and shown the arrangement of the spring or springs inside the burner-tube D not only serves to elastically support the incandescent mantle for intercepting the shocks and concussions, but it is, besides, of great advantage by operating an intimate mixture of the gas issuing from the nozzle K with the atmospheric air entering through the holes d of the tube D. As shown in Fig. l, the said tube D may be form ed with a perforated ring D, opposite or near to the upper end of the nozzle K, the holes cl being out within the bottom of said ring, and the said ring serves to facilitate the aspiration of atmospheric air through the holes cl by the gas issuing from the nozzle K. By the aid of said perforated ring and the intimate mixture of gas and air obtained through the spring or springs inside the burner-tube a very bright, constant, and steady flame is obtained; and the said flame may be further improved by placing into the body L of the nozzle K a ring M, closed at the top, permitting the passage of gas only through a channel m, cut into the outside of said ring. A screw N, entering into said channel m, serves to vary the width of passage, and by this means the great inconveniences are overcome which are connected With the existing nozzles having extremely narrow perforati ons,which require frequent readj usting and repairs.

I do not limit my invention to the specific construction of the spring or springs employed, as many modifications may be employed in addition to those shown in the drawings and described in the specification.

I claim as my invention 1. In a burner for incandescent light, the combination, with the burner-tube, of a mantle-carryin g central pin supported by a spring or springs arranged inside of said burnertube.

2. In a burner for incandescent light, the combination, with the burner-tube, of a mantle-carrying, central pin supported by a spring or springs resting on a fixed part inside the burner-tube.

3. In a burner for incandescent light, the combination, with the'burner-t'ube, of a mantle-carrying pin supported by a spring or springs suspended within the burner-tube.

4.. In a burner for incandescent light, the combination, withthe burner-tube, of a mantle-carrying pin supported by a spring or springs arranged inside the burner-tube, the said pin being insulated against the metal of the spring or springs.

5. In a burner for incandescent light, the combination, with the burn er-tube, of a mantle-carrying pin supported by a spring or springs arranged inside the said burner-tube,

and an insulating-cap of asbestos or similar material to keep the heat from the spring or springs.

6. In a burner for incandescent light, the

nozzle admitting the gas through a channel, and a screw entering said channel for regulating the admittance of gas to the burner.

9. In a burner for incandescent light, the combination, with the burner-tube, of a mantle-carrying pin supported by a spring or springs arranged inside the burner-tube, the air-holes of which are seated in a perforated ring of the said burner-tube. I

FERDINAND FRITZ.- iVitnesses:

W. HAUPT, C. H. DAY. 

